Sewing-machine.



D. 'S. SEYMOUR.

SEWING MACHINE.

APPLICATION FILED AUG.8,1908.

Patented June 16, 1914.

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SEWING MACHINE.

APPLICATION FILED AUG. a, 1908.

1, 1 00,497. Patented June 16, 1914.

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SEWING MACHINE.

APPLICATION FILED AUG. s, 1908.

Patented June 16, 1914:.

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SEWING MACHINE. APPLICATION FILED AUG. e, 1908.

Patented June 16, 1914.

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UNITED STATES PATENT OFFICE.

DUDLEY S. SEYMOUR, 01 OAK PARK, ILLINOIS, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SEWING-MACHINE.

Specification of Letters Patent.

Paten ed J line 1. 91

To all whom it may concern:

Be it known that I, DUDLEY S. SEYMOUR, a citlzen bf the United States, residing at Oak Park, in the county of Cook, State of Illinois, have invented certain new and usei the parts of the stitching mechanismand all the parts of the feeding mechanism.

A still further object of the invention is to rovide a mechanism for operating the fee ing mechanism and the stitching mechnnism, which shall be so located as to be separated by a wall or casing from the stitching point, whereby dirt, lint or the like, dislodged from the material by the stitching operation, will be kept from the operating mechanism.

Further objects of the invention. will in part be obvious, and will in part be hereinafter more fully described.

In the drawings, which show by way of illustration one embodiment of the invention, Figure 1 is a front view of a. machine embodying my invention, with certain parts removed so as to show the operating mechanism; Fig. 2'is a view from the end of the machine, showing the feeding mechanism and the parts for operating the same; Fig. 3 is a sectional view, showing the operating eccentric and its connection to the needle lever, the looper support and the rocking frame of the feeding mechanism; Fig. 4 is a detail view, showing the link for giving the up and down movements to the feed dog, and in dotted lines the movement of said link; Fig. 5 is a detail view partly in section, showing a modification of the invention, the looper support being rocked directly by the eccentric.

The machine herein shown is of the Union Special inclosed ba machine type, althou it is obvious that roin certain aspects, t e invention may be applied to other types oi machines,

The bed plate 1 has rising therefrom an inclosed casing 2, forming the standard of the machine, from which projects the overhanging arm 3, carrying the needle head 4 at Its forward end. The needle 5 is carried by a needle bar 6, and is connected by means of a llIlk 7 to a needle lever 8, which is pivoted at 9 to a stud carried by the casing 2.

The main shaft 10 is mounted in suitable hearings in the lower end of the casing, and is operated by the usual belt wheel 11. Said shaft 10 extendsthrough the front wall 12 of the casing 2, and. carries a thread controller 13 at its forward end. An eccentric 14 is mounted on the main shaft 10. The eccentric strap 15'encircles the eccentric 14, and, at its free cud, is pivoted to a stud 16, carried by the needle lever 8. As the min shaft rotates, the eccentric 14 through the strap 16 will vibrate the needle lever about its pivotal support 9, Cooperating with the needle 5 is a looper 17, herein shown as a thread-carrying looper. Said loo er is pivoted at 18 to a looper carrier or roc shaft 19.-

Said looper carrier is mounted on a stud 20 at its forward end, and at its opposite end is secured to a short shaft 21, carrying an arm 22. A link 23 is pivoted at one end to a ball stud, carried by the arm 22, and at its other end to a ball stud 24, mounted in the lug 25 formed on the needle lever 8. The stud 24 is inclined to the horizontal so as to proper-l cobperate with the line 23 which is incline to the a vertical, as clearly shown in Fig. 3. Said ball stud 24 is provided with a rounded shoulder 26, so as to allow afree movement of the needle lever 8, which in turn through the link 23, oscillates the shaft 21, and the looper carrier 19. This gives to the looper a needle-avoiding movement. The looper is oscillated about its pivotal support 18, by means of a link 27 which is pivoted at 28 to the needle lever extension 29.

In Fig. 5 I have shown the looper support as 0 rated directly by the eccentric. The eccen ric strap 15 cooperating with the eccentric 14 and connecting with the ball stud 16 on the needle lever 8, has an extension 51. The looper support 21 carries a downwardly extending arm 22. A link 52 is pivotally'connected at 53 to the arm 22, and at its other end to a stud 54 carried by the extension 51 of the eccentric strap. The operation of'the parts is the same as in the construction above described. The feed dog is carried by the feed bar 81, which is' frame 33 is provided with an arm 36, which 'by means of a nut 41.

is formed integral therewith and slotted as at 35. The eccentric strap 15 has an arm 37 clamped thereon by [a suitable screw 38. A link 39 is pivoted at one end to a stud carried by the arm 37, and at its other end to a bolt 40 secured in the slot 36 of the arm 35,

rotates the eccentric strap 15 is moved laterally as well as up and down. The lateral movement of the eccentric strap 15 through the link 39 rocks the frame 33, and thus gives the backward and forwardmovement of the feed dog. The feed bar is provided with a downwardly extending arm 42, which I is divided so as to form the forwardly ex 45, 46. The lug 45 is connected to the arm 43 by means of a link 47, while the lug 46 is connected to the arm 44 by means of a link.

48. As the looper support is oscillated to give the needle-avoiding movement to the looper, the lugs carried by the looper carrier are moved up and down, and said lugs through the links 47 and 48, give a rising and falling movement to the feed dog.

' When the feed dog is at the forward end of its stroke, the lug 45 is in its extreme lower position, as shown in dotted lines in Fig. 4. The pivotal connection 49 between the link 47 and the arm 43 of the feed bar 31 is at its extreme forward position, as shown in dotted lines in said figure. As the. feed dog begins its feeding movement, the arm 43 moves backward, as viewed in said figure. The link 47, swinging about the pivotal point 50 would tend to carry the forward end of the arm 43 downward, but at this time the looper is moving laterally and the lug 45 is being raised, so that the downward movement of the pivotal point 49 about the pivotal point 50, is offset by the upward movement of the pivotal point 50, through the upward movement of the lug 45, and, as a consequence, the pivotal point 49 will move toward the rear of the machine in substantially a straight line parallel with the work support. This will give to the feed dog a feeding movement in substantially a straight line parallel to the work support. On the return movement of the feed dog, the same is moved quickly out of engagement with the fabric, and is brought quickly into engage ment with the fabric.

It will thus be seen that I have provided a machine wherein the needle and the looper As the eccentric 14 the feed dog, cannot possibly come in contact with the eccentric.

Having thus described my invention, what I claim. as new and desire to secure by Letters Patent, is

1. In a sewing machine, a main shaft, an eccentric carried thereby, a strap cooperating with said eccentric, a needle, means whereby said needle is reciprocated by the longitudinal movements of said strap, a feed having back and forth and up and down movements, and a link having a pivotal connection with said strap, and-a connection with said feed and disposed whereby the lateral movement of said strap will give one of the movements to said feed.

2. In a sewing machine, a main shaft, an eccentric carried thereby, a strap cooperating with said eccentric, a needle, a looper, tendin arms 43, 44. The looper carrier 19 is provided with outwardly extending lugs means whereby said needle and looper are operated from the longitudinal movements of said strap, a feed, and means for giving said feed one of its movements from the lateral movements of said strap.

3. In a sewing machine, a main shaft, an eccentric carried thereby, a strap cooperating with said eccentric, a needle, a looper, a feed, means whereby said needle, looper and one of the feed movements are obtained from the longitudinal movements of said strap and means whereby the other feed movement is obtained from the lateral movements of said strap.

4. A sewing machine comprising in combination, stitch forming mechanism including a needle, a looper, a main shaft, a single member operated by said shaft, devices operated by the longitudinal movements of said member for reciprocating said needle and for oscillating said looper and giving thereto a needle avoiding movement, a feeding mechanism, and means operated by the lateral movements of said single member for positively operating said feeding mechanism.

5. In a sewing machine, a main shaft, an eccentric carried thereby, a feed dog, means to give said feed dog its movements from said eccentric, a looper, means operated by said eccentric for giving the looper its needle-avoiding movements, a needle lever, and means to operate it from said eccentric, and means to give said looper its loop-taking movements from said needle lever.

6. In a sewing machine, a main shaft, an eccentric carried thereby, a needle, a looper, a feeding mechanism, a vibrating part connected to said eccentric for giving said feed dog its work-engaging movements, a second vibrating part to give said feed dog its rising and falling movements, said second vibrating part carrying a looper, means for giving, said vibrating parts, needle and looper movements from said eccentric.

7. A sewing machine including in combination, stitch forming mechanism including a needle a looper, a main shaft, an eccentric carried by said main shaft, and devices operated by said eccentric for reciprocating said needle, and for oscillating said looper, and giving thereto a needle avoiding movement, a feeding mechanism, and means operated by said eccentric for operating said feeding mechanism;

8. A sewing machine including in combination, stitch forming mechanism including a needle, a looper, a main shaft, an eccentric carried by said main shaft, and devices operated by. said eccentric for reciprocating said needle and for oscillating said looper, and giving thereto a needle avoiding movement, a feeding mechanism including a feed dog, means for reciprocating said feed dog, and for moving said feed dog vertical y from said eccentric.

9, A sewing machine including in combination, stitch forming mechanism, including a needle a looper, a main shaft, an eccentric carried by said main shaft and devices operated by said eccentric or reciprocating said needle, and for oscillating said looper and giving thereto a needle avoiding movement, a feeding mechanism including a feed dog, a feed bar supporting said feed dog, a rocking frame to which said feed bar is pivoted, and means for rocking said frame and for moving said feed dog up and down from said eccentric.

10. A sewing machine including in combination, a needle a looper, a main shaft an eccentric on sai shaft, devices operate by said eccentric for reciprocating said needle and for vibratin said looper laterally, an for oscillating said looper, a feeding mechanism including a feed dog, a feed bar carrying said feed do ,and means for raising and lowering said eed bar from said looper mechanism.

11. A sewing machine including in combination, a needle, a needle lever, a main shaft, an eccentric on said main shaft, an eccentric strap coiiperating with said eccentric and having a ball joint connection with said lever a feeding mechanism including a rocking frame, and means connected to said. strap between its ends whereby the lateral movement of said strap will rock said frame.

12. A sewing machine including in combination, a needle, a needle lever, a mainshaft, an eccentric on said main shaft, an eccentric strap coiipera-ting with said eccentric and connected to said lever, a feeding mechanism including a rocking frame, an arm connected to said eccentric strap and a link pivoted to said arm and to said rocking frame,

13. A sewing machine including in combination, a needle, a needle lever, a main shaft, an eccentric onsaid main shaft, an eccentric strap cooperating with said eccentric and connected to-said lever, a feeding mechanism including a rocking frame, an arm connected to said eccentric strap, and a link pivoted to said arm and to said rocking'frame, and means for adjusting the connection between said link and said rocking frame.

, 14. A sewing machine including in combination, a needle,-a needle lever, a main shaft, an eccentric carried by the main shaft and reciprocating said lever, an inclined stud carried by said lover, a rock shaft parallel with the main shaft, alink connecting said rock shaft to said inclined stud, a feeding mechanism, means operated from said eccentric for reciprocating said feeding mechanism back and forth, and means operated from said rock shaft for raising and lowering the feeding mechanism.

15. A sewing machine including in combination, a needle, a needle lever, a main shaft, an eccentric thereon, an eccentric strap for cooperating with said eccentric and connect ed to said needle lever, an inclined stud carried by said needle lever, a rock shaft parallel with said main shaft, a link connecting' said rock shaft with said stud, a feeding mechanism including a feed bar, having a forwardly extending arm, a link connecting said arm to said rock shaft, whereby the feed dog is raised and lowered and meansfor moving said feed bar back and forth.

16. A sewing machine including in com bination a needle, a needle lever, a main shaft, an eccentric thereon, an eccentric strap for cooperating with said eccentric and connected to said needle lever, an inclined stud carried by said needle lever, a rock shaft parallel with said main shaft, a link connecting said rock shaft. with said stud, a feeding mechanism including a feed bar having a forwardly extending arm, a link connecting'said arm to said rock shaft whereby'the feed dog is raised and lowered, and devices connected to the eccentric strap for moving the feed bar back and forth.

- 17. A sewing machine including in combination, a needle, a needle lever, a main shaft, an eccentric thereon, an eccentric strap for cooperating with said eccentric and connected to said needle lever, an inclined stud carried by said needle lever, a rock shaft parallel with said main shaft, a link connecting said rock shaft with said stud, a feeding mechanism including a feed bar 'having'a forwardly extending arm a link connecting said arm tosaid rock shaft, whereby the feed dog is raised and lowered, a rocking frame to which the feed bar is pivoted, an arm carried by said eccentric strap, and a link pivoted to said arm and to said rocking frame.

18. A sewing machine including in combination, a needle, a needle lever, a main shaft, an eccentric thereon, an eccentric strap for cooperating with said eccentric and connected to said needle lever, an inclined stud carried by said needle lever, a rock shaft parallel with saidmain shaft, a link connectingpivoted to said arm, and to said rocking frame and means for ad ustm the connectlon between said link and said rocking frame. 16

In testimony whereof I a-flix my signature, in presence of two w tnesses,

D. S. SEYMOUR. Witnesses:

E. EASTERBERG, WARD WRIGHT. 

